O.S. Engines would like to introduce new MAX-B21.
This engine will replace the MAX-21 XR-B VER.3 and MAX-21 XZ-B VER.2.
For 1/8 nitro Offroad and 1/8GT
MAX-B21 is easy to use from entry-level users to sports users and has excellent cost performance. Based on the O.S.SPEED series engine, it has a well-balanced combination of smooth speed and power delivery and can be used in both on and off-road racing situations.
·The crankcase has been improved based on the OSSP-B2104 crankcase. Balances ease of handling and power feeling.
·Piston and sleeve is improved based on OSSP-B2104.
Additionally, the connecting rod is the same as the O.S.SPEED buggy lineup.
With the engine it includes:
P3 glow plug
Reducer 6mm(Orange) and 7mm(yellow)
Exhaust seal ring
Dust cap set 3mm/16mm/18mm